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Finding the Fourth Proportional to 485,064.28, 669,299.88 and 270,199

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Solution

The fourth proportional to 485,064.28, 669,299.88 and 270,199 is: 372,825.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,064.28 : 669,299.88 = 270,199 : x
  2. Step 2: Convert to fraction form
    485,064.28/669,299.88 = 270,199/x
  3. Step 3: Cross multiply
    485,064.28x = 669,299.88 × 270,199
  4. Step 4: Simplify right side
    485,064.28x = 180,844,158,276.12
  5. Step 5: Solve for x
    x = 180,844,158,276.12/485,064.28
  6. Step 6: Final answer
    x = 372,825.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.